03 Jun 2009

Circuit simulator.

Qucs is an integrated circuit simulator which means you are able to setup a circuit with a graphical user interface (GUI) and simulate the large-signal, small-signal and noise behaviour of the circuit. After that simulation has finished you can view the simulation results on a presentation page or window.

Qucs, briefly for Quite Universal Circuit Simulator, is a circuit simulator with graphical user interface (GUI). The GUI is based on Qt® by Trolltech®. The software aims to support all kinds of circuit simulation types, e.g. DC, AC, S-parameter, Harmonic Balance analysis, noise analysis, etc.

What's New

Version 0.0.15: The new release comes with new translations into Arabic and Czech, model libraries for PMOSFETs, NMOSFETs, regulators, varistors and ideal components, and many new primitive components such as EPFL-EKV NMOS/PMOS V2.6, rectangular waveguide, HICUM L0 v1.2, HICUM L2 v3.23, photodiode, digital buffer, microstrip radial stub, phototransistor, RLCG transmission line and numerous new digitalMore...

Requirements

Mac OS X 10.3 or later, an installation of Trolltech's Qt/Mac 3..53 C++ Frame work; a download bookmark for an installer apckage of Qt/Mac 3.3.4 (QPL/GPL edition) is provided with the installer. While the program runs natively under MacOSX some libraries from Apple's X11 distribution are required.

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Qucs is an integrated circuit simulator which means you are able to setup a circuit with a graphical user interface (GUI) and simulate the large-signal, small-signal and noise behaviour of the circuit. After that simulation has finished you can view the simulation results on a presentation page or window.

Qucs, briefly for Quite Universal Circuit Simulator, is a circuit simulator with graphical user interface (GUI). The GUI is based on Qt® by Trolltech®. The software aims to support all kinds of circuit simulation types, e.g. DC, AC, S-parameter, Harmonic Balance analysis, noise analysis, etc.

Qucsator, the simulation backend, is a command line circuit simulator. It takes a network list in a certain format as input and outputs a Qucs dataset. It has been programmed for usage in the Qucs project but may also be used by other applications. So far we were working on the GUI and on some basic simulation features. In fact there is now a kind of useful user interface for setting up schematics and presenting simulation results in various types of diagrams. DC, AC, S-parameter, noise and transient analysis is possible, mathematical equations and use of a subcircuit hierarchy are available. Anyway, a lot of work has to be done and thus we are looking for people who want to support the project.

Version 0.0.15: The new release comes with new translations into Arabic and Czech, model libraries for PMOSFETs, NMOSFETs, regulators, varistors and ideal components, and many new primitive components such as EPFL-EKV NMOS/PMOS V2.6, rectangular waveguide, HICUM L0 v1.2, HICUM L2 v3.23, photodiode, digital buffer, microstrip radial stub, phototransistor, RLCG transmission line and numerous new digital primitives. Passing parameters to Verilog-HDL and VHDL subcircuits and typed generic parameters of VHDL files are now supported as well as arbitrary in/out signals. Simulation time for digital files (Verilog and VHDL) are now stored in an additional configuration file and the import dialog has been replaced by a complete import/export frontend for the Qucs-Converter command line tool. US letter formats for schematic frame have been added. The build system now implements an additional install step for MacOSX and the appropriate icons.

In the analogue simulation core global nodes (e.g. subst!) have been introduced, property references inside the same instance of a component and variables in constant parameter simulation boxes are allowed. A noise figure property has been added to the amplifier model and the matrix power operation is available in the equation solver. The Qucs-Converter command line tool allows now to translate existing HICUM models into library elements as well as the translation of polynomial C's and L's and F, H, E and G polynomial SPICE sources.